The Pied Flycatcher is one of the species in the UK that is mostly limited to the West and North of the UK, it generally prefers old oak-woodland. This means it tends to be mostly found in Wales, Northern England and Scotland. However, as a migrant, it can be theoretically seen on passage anywhere, as was the case with this female/juvenile bird seen in the gardens of Alexandra Palace. The adult male is much more distinctive - being a bold black and white species, and as such is probably a bit easier to pick out when you see them.